Sign support bracket



FIG. 1 is a top, perspective view of a sign support bracket showing ournew design;

FIG. 2 is a bottom, perspective view thereof;

FIG. 3 is a front view thereof; the rear view is a mirror image of thefront view;

FIG. 4 is a right side view thereof; the left side view is a mirrorimage of the right side view;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view.

The features shown in broken lines are portions of the sign supportbracket forming no part of the claimed design. The features shown inlong dash-short dash bolded broken lines indicate the bounds of theclaimed design and otherwise form no part of the claimed design.

CLAIM The ornamental design for a sign support bracket, as shown anddescribed.